x+1/x=3 x²+1/x2 find x
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Answer:
x+1/x=3
(x+1/x)^2=(3)^2
=> x^2+2.x.1/x+1/x^2=9
=> x^2+1/x^2+2=9
=> x^2+1/x^2=9-2
=> x^2+1/x^2=7
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